Changing The Pid Control Data Or Input/Output Data Setting Range (For Qcpu And Lcpu) - Mitsubishi Electric MELSEC-Q series Programming Manual

Changing the PID control data or input/output data setting range
(for QCPU and LCPU)
The setting range of the following data of the PID control data (refer to Section 5.1) and I/O data (refer to Section 5.2) can be
changed. ( Page 36 PID Control Data,  Page 51 I/O Data)
Item
PID control data
I/O data
To make the user setting valid, turn the bit corresponding to the relevant loop of the PID limit setting special register (SD774,
SD775, SD794, SD795) to "1".
PID Limit Setting Special Register
Incomplete derivative Complete derivative
SD794 SD774
SD795 SD775
0: With PID limit (0 to 2000)
1: Without PID limit (-32768 to 32767)
The Basic model QCPU has 8 loops.
b0 to b7 of SD774 and SD794 are valid.
Set Data
MV lower limit value
MV upper limit value
MV change rate limit value
PV change rate limit value
SV
PV
Automatic MV
PV after filtering
Manual MV
Setting Range
4 FUNCTIONS OF PID CONTROL
4.3 Other Functions
4
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